1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7914181af5930f1a6dae55771700dd1f41bbf5b0a22b3c274351e3315809c2ae. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9e92e8d6-b1b6-417a-9d5c-5dac18c25368.json and https://artists.proofprofile.net/proofs/artist/9e92e8d6-b1b6-417a-9d5c-5dac18c25368.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1019ee94def8edb41ba30eadc40c97badac1dc95e4c879cf4b199f04695c295d. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUA1H2055622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x000f7199181576cff05c0f60772c9efdadc37d3555b92592a017b36a90103e45. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUA1H2055626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e8a2d77318f117157194560e343be86e58f4b1213f9fefd8f79630df9b88dd0. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:48:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUA1H2055628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8f924e8af4e016d5c1b130758e4b113ab5393ca151e6eda933ca492801dfb95. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUA1H2055629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc828829002bef7e5ab1e5bb8e7f6a6d1eddc7617e30ff90a05448a6f1a429121. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AEA0Q2011210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94bde951182e9ce4be916c377abf6372fc18b3c0c9e19ec13f8727e9156807da. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AEA0Q2011212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfdbf9d5529b533c285b34f86d5568e83d9bdb8c408fe7aefdab3999faa6bbea. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AEA0Q2011213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ef2b12820367dea140495853b71de5dcfd87ec9150e2516ddf9d17e1b46bb4d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AEA0Q2011218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe530f71516c552456ec52154f50ef437576c69e2e0884d335bb1728a8efe45ec. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AEA0Q2065237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb72b5e6381aa9061d42134ba60f37cc8f8948b54ad6bc66eefd09804be48212f. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AEA0Q2065244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2eb6ad95975c354d5bea13ca61c84d54a5fa03e7497b8cdba30102f1a7aa639. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AEA0Q2065245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f5ed0e72174f03c329617155a717bd952918d6d581314776c24986f4c063f33. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AEA0D2005747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5904340489a38b82bf8f8b5f23a25b7bfdbab48eb6dd3483b5f18557fa9dd5bd. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AEA0D2005748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b295d96b396e5b6249ba1d81a0753d62cad1615eac1e1547ea1365c090907e0. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AEA0D2005753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd991e45c48a1005efc0e40d32f156d3ab5684f203768cf5001e46ea1c91e4101. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AEA0D2024543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b87bb1b79bc69310df25e8ca1cbfcf6837a5bdd68e0b4041246675dfb048825. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AEA0D2024544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2fcb9f0c1f00ba32d076901dd61ea671e073d21b34aabefb9ae7f030d474f1e. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:36:42Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AEA0D2024545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e7b556c94db831c1e9482eca7406873aef7d22624f830a3d91b186e47018345. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:02:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AEA0D2037485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e209ba8b1a1acb4c8c6753ecb4627ede530c0f4e2d3da99fd41acc9eef2ae4. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AEA0D2046493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f72eb0e37c3c3d9b183a4a1869d538efc938cd2705ab54e25ec1c679c70426. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AEA0D2046495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d1615b704cecfee595af2f5b73a3e9c47d2a9c9eaa1f925ec8e33c8e3797a4. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:49:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AEA0D2046496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c8aee01198be47ebfffb37486de709fba87c4e46cb50fdbacb31d7ffd7ab614. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AEA0D2074642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aaea07cab2a3428f6f60e2a4c451e316e1c165a1800de4972905ea3f8c98967. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:12:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AEA0D2083668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00807fa94da28c5f2c5846d8505f5425cfdcf96bffe9eadf073373f53ac58cc9. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUA1H2270013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d25a4d64a69957384ba9948ea05f6fed4a015ab539d130913d4d5f02f31966a. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T04:55:43Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUA1H2270014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44041d80e337ed1ed675c649f6f9137b1b1269a14dce9e7eaf0c1e404a665588. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUA1H2270015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50678115395a9a58fece72ecf6b4aca28cf2ea5e207ca3685358daa208ed2b80. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUA1H2270017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda07e4137d6f64c8853d9a001b883e1e496d09989eff6fdec033bcb96496a690. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUA1H2270018.